Oiling system mods. (lots of pics!!!!)
04-05-08, 06:21 PM
#1
Oiling system mods. (lots of pics!!!!)
I am performing all the oil system mods that i know of and thought i would share.
My objectives are.
1-No single passage smaller than 1/2" (including fittings).
2-No dual passage smaller than 3/8" (including fittings).
3-As few angled fittings and 90* internal passages as possible.
4-Block the oil galley in that goes trough the dowels (in case the dowel land brakes).
5-Be able to adjust the oil pressure externally (just do).
6-Minimize restriction on the oil pump pickup (turbulence).
7-Increase the oil system capacity (larger filter)
8-Regulate the oil pressure to the turbo without restricting flow.
I can't take credit for all of the mods. Some of them i pick up from reading over the years and some are my idea.
First are the mods to the oil pump passage. I did the standard porting and polishing but did not spend a tremendous amount of time on it.
I then knocked the plug out of the end of the oil pump galley and enlarged the passage. I feel that this is the biggest restriction in the whole oiling system. I reamed it out to 1/2 all the way into the oil pump cavity and then tapped it (18 X 1.5) so i could eliminate the oil passage that goes trough the front cover. I am also going to plug the bypass valve in the front cover.
Plugging the passage to the front cover and bypass valve.
Then i removed the casting flash from the oil drain back passage in the front iron.
Then i removed the galley plug for the front main bearing. I reamed the passage to 3/8 and tapped it (16 X 1.5).
My objectives are.
1-No single passage smaller than 1/2" (including fittings).
2-No dual passage smaller than 3/8" (including fittings).
3-As few angled fittings and 90* internal passages as possible.
4-Block the oil galley in that goes trough the dowels (in case the dowel land brakes).
5-Be able to adjust the oil pressure externally (just do).
6-Minimize restriction on the oil pump pickup (turbulence).
7-Increase the oil system capacity (larger filter)
8-Regulate the oil pressure to the turbo without restricting flow.
I can't take credit for all of the mods. Some of them i pick up from reading over the years and some are my idea.
First are the mods to the oil pump passage. I did the standard porting and polishing but did not spend a tremendous amount of time on it.
I then knocked the plug out of the end of the oil pump galley and enlarged the passage. I feel that this is the biggest restriction in the whole oiling system. I reamed it out to 1/2 all the way into the oil pump cavity and then tapped it (18 X 1.5) so i could eliminate the oil passage that goes trough the front cover. I am also going to plug the bypass valve in the front cover.
Plugging the passage to the front cover and bypass valve.
Then i removed the casting flash from the oil drain back passage in the front iron.
Then i removed the galley plug for the front main bearing. I reamed the passage to 3/8 and tapped it (16 X 1.5).
04-05-08, 06:21 PM
#2
I enlarged the area where the banjo bolt for the turbo originally goes so i could tap and plug the galley (blocking oil from the dowels).
Thats about all the work i did on the front iron.
On the rear iron i made a oil filter adapter that eliminated the passage for the pressure regulator.
I reamed the rear main passage to 3/8" and radius the passage.
I still need to make the pickup and plug the oil passage to the dowels in the rear iron.
Here are a few pics of the plumbing of the system.
Here is a shot of the "Y" that will oil the front and rear mains. It is #10 inlet and #8 outlets.
Thats about all the work i did on the front iron.
On the rear iron i made a oil filter adapter that eliminated the passage for the pressure regulator.
I reamed the rear main passage to 3/8" and radius the passage.
I still need to make the pickup and plug the oil passage to the dowels in the rear iron.
Here are a few pics of the plumbing of the system.
Here is a shot of the "Y" that will oil the front and rear mains. It is #10 inlet and #8 outlets.
04-05-08, 06:22 PM
#3
Here is a picture of the oil line for the turbo going to the regulator.
And lastly, here are a few shots of the oil filter adapter with oil pressure adjustment. The #8 line from the adapter is the return from the regulator.
As i assemble and install the motor i will try and update this thread.
And lastly, here are a few shots of the oil filter adapter with oil pressure adjustment. The #8 line from the adapter is the return from the regulator.
As i assemble and install the motor i will try and update this thread.
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04-07-08, 07:09 PM
#15
http://cgi.ebay.com/ebaymotors/ws/eB...S%252BI%252BSS
.
Last edited by 13B-RX3; 04-07-08 at 07:20 PM. Reason: Include the link
05-21-08, 08:14 PM
#22
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hmm, i was unaware that the oiling system had so much room for improvement. For a 8k redline motor at say 14 lbs is there anything I could/should do when im already ripping it all apart to add dual massive oil coolers. That all looks like mods you do when building a new motor though
Last edited by JTurtonRX_7; 05-21-08 at 08:31 PM.
05-21-08, 10:51 PM
#24
Nothing oil related, more along the lines of 27 PSI on three piece seals. I will however need a stout oiling system for this beast https://www.rx7club.com/rotary-drag-racing-167/got-fuel-756944/
Plus all these mods were very cheap.
Plus all these mods were very cheap.